Subject(s)
Magnetic Resonance Imaging , Myxoma/diagnosis , Pelvic Neoplasms/diagnosis , Soft Tissue Neoplasms/diagnosis , Adult , Female , HumansABSTRACT
The authors present a case in which Tc-99m HMPAO labeled autologous leukocytes were used to demonstrate a brain abscess in a patient undergoing evaluation for fever of unknown origin. The abscess was demonstrated on both 1-hour and 24-hour images. The positive 1-hour image led to CT and MRI studies, which are included for correlation. In addition to its previously identified role as a secondary diagnostic test in the differentiation of tumor and abscess, the authors propose that Tc-99m HMPAO is useful as a primary diagnostic tool in the identification of brain abscess. Furthermore, the authors suggest that Tc-99m HMPAO is preferable to In-111 labeled leukocytes because of its better resolution and earlier imaging characteristics.
Subject(s)
Brain Abscess/diagnostic imaging , Leukocytes , Radiopharmaceuticals , Streptococcal Infections/diagnostic imaging , Technetium Tc 99m Exametazime , Aged , Brain Abscess/complications , Brain Abscess/diagnosis , Fever of Unknown Origin/etiology , Frontal Lobe/diagnostic imaging , Frontal Lobe/microbiology , Humans , Image Enhancement , Indium Radioisotopes , Magnetic Resonance Imaging , Male , Radionuclide Imaging , Streptococcal Infections/complications , Streptococcal Infections/diagnosis , Streptococcus/classification , Time Factors , Tomography, X-Ray Computed , Transplantation, Autologous , Whole-Body CountingABSTRACT
Two liver transplantation patients are reported who experienced severe hemobilia following percutaneous placement of a transhepatic biliary drainage catheter. In both, hepatic angiography demonstrated the source of bleeding from a traumatic pseudoaneurysm of a right hepatic artery branch. Hemobilia in both patients was successfully treated using selective embolization techniques. Follow-up computed tomography of the liver showed no evidence of allograft necrosis or abscess formation. One patient developed an intrahepatic biliary stricture adjacent to the embolized branch artery nine months following the procedure. Hepatic artery embolization techniques are effective in the treatment of life-threatening hemobilia posttransplantation.
Subject(s)
Bile Ducts , Drainage/adverse effects , Embolization, Therapeutic , Hemobilia/etiology , Liver Transplantation , Aneurysm/diagnostic imaging , Aneurysm/etiology , Cholestasis/etiology , Cholestasis/therapy , Hemobilia/diagnostic imaging , Hemobilia/therapy , Hepatic Artery/diagnostic imaging , Hepatic Artery/injuries , Humans , Male , Middle Aged , Postoperative Complications/therapy , Radiography , Wounds and Injuries/diagnostic imaging , Wounds and Injuries/etiologyABSTRACT
Major complications of operations that remove or transplant a portion of the pancreas appear related to the arterial blood supply. Hemorrhage is a result of inadequate control of the appropriate principal arteries, and ischemia and its consequences occur when the arterial blood supply to portions of preserved pancreas has been inadvertently interrupted. This radiographic study of the principal arteries of the pancreas demonstrates that these vessels may be visualized and their origin determined in the vast majority of cases. The application of data gained from preoperative arteriography can potentially decrease the incidence of major complications associated with removal or transplantation of portions of the pancreas.